Optical instrument.



V I. 4 BY Oi /dz I'NVENTUIi fl yfo/gyzd/ fim 1- W,

H. L. DE ZENG.

OPTICAL INSTRUMENT.

APPLICATION FILED JUNE 27, I912.

1,165,232; Patented Dec.21,1915.

ATTORNEYS L. DE ZENG, OF MAPLE SHADE, NEW JERSEY.

OPTICAL INSTRUMENT.

Specification .01 Letters Patent.

Patented Dec. 21, 1915.

Application filed June 27, 1912. Serial No. 706,148.

To all whom it may concern:

Be it known that I, HENRY L. DE ZENG, a citizen of the United States, residing at Maple Shade, in the countyof Burlington,

State of New Jersey, have invented a newand useful Optical Instrument, of which the followin is a specification.

My invention relates to a new and useful optical instrument consisting .of a universal self-contained handle adapted for use in connection with various electric lighted optical and surgical instruments, by means of which I am enabled to employ a lamp of low voltage and amperage, to maintain a constant current and to obviate the frequent burning out of lamps as has heretofore been the case.

In the drawings which represent an embodiment of my invention, Figure 1 represents an elevation of an optical handle embodying my invention and showing a few of the instruments, in elevation, to which the handle may be'attached. Fig. 2 represents a vertical sectional view on an enlarged scale of an optical handle and showing a lamp of low voltage and amperage. Similar numerals of reference indicate corresponding parts in the figures' Referring to the drawings, in the instruments now in use on the market, wherein the current is supplied, by means of conductors from any extraneous source, frequent burning out of the lamps occurs as well as bursting of the lamps, when in use, and in addi tion the instrument so su plied with current is limited in its scope 0 application.

. My invention is designed to overcome these defects and prevent the frequent buming out of the lamps, as well as eliminating any danger due to the bursting of the lamps when in use in the different orifices of the body, such as endoscopes, specula and the diagnostic instruments for eye, ear, nose and throat. In addition thereto the current derived from the self-contained handle being of low voltage, shock to the patient or to the operator is absolutely impossible through. short circuits etc., which frequently occurs in the class of instruments referred to as now in use, due to thehigh current potential back of them. In addition I desire to employ a tungsten or similar lamp having low voltage and amperage. with maximum illumination, to which this handle is particularly well adapted, thereby giving a much more brilliant illumination with;

, able.

corresponding decreased current consumption as compared with the carbon and other types of lamps now in use.

The exceedingly high efliciency of the tungsten and siimlar lainps, when used in con unction with the handle battery, eliminates practically all heat and they can, therefore, be brought directly intocontact with the parts to be examined without inconvenience or danger to the patient, thereby making possible, the trans-illumination of these parts, heretofore impossible to accomplish.

. By reason of the perfect electric balance existing between the source of current supcontained in the handle and the low v0 tage lamps employed, the highest efficiency with absolute safety is obtained. In some instances, for obtaining a uniformly brilliant illumination, the lamps employed may be provided with frosted globes. Among the other advantages which this self-contained universal handle possesses is the fact that the instrument attached thereto can be conveniently employed'in any place or position, such as at the bedside, and in places where no electric current is avail- Attention being further directed to the fact that the instrument is under the instantaneous and absolute personal control of the operator at all times, no assistant being required to manipulate the current supply as heretofore.

In delicate operations on the eye or other sensitivg organs of the body where thecessation of proper illumination might prove fatal to the success of the operation, the employment of this handle is most necessary.

1 designates the handle, formed of a casing 2, providing a chamber for the reception of a self-contained source of current supply, such as a suitable battery 3. Que end of the casing is provided with. a closure or -cap 5 to which is connected a suitable spring 4 or other suitable resilient means adapted to support the battery 3, and holds the same in suitable position for contact. The opposite end of the casing is provided with a cap or closure 6 to which is suitably connected interchangeable attaching means 7 here shown as a tube having the exterior threads 8 for connection with any suitable instrument, and being also provided with the interior threads 9 for the reception of a lamp, if desired.

Between the cap 6 and the attaching means 7 isprovided ail insulation *10, while on the j a head 14 thereon which ism suitable en:

- as will be" evident.

. Shown, adjacent upp r d v j interior of the attaching means or tube 7 is a tubular insulation 11' which is adapted to receive a. threaded pin 12, which is adapted to be in contact with one pole of the bat- 13 designates an electric conductor having tery, and by the proper manipulation of the 4 current interrupter, It will be understoodthat the lamps employed are preferably of tungsten'or similar t variety, of

viding the maximum'efliciency with thelcor responding decreased current consumption' t and eliminating practically all objectionable I heat, adapting the instrument for use digagement with shoulders upon the insulating tube 11 and between. the electric conductor 13 and the threaded pin-12 is a spring 15 which serves as a conductor and as a resilient bearing for the electric conductor 13, beexamined, with perfect safety, while at the same time the electric current is under the instantaneous and personal control of the operator. fl':

Attention isdirected to the fact that there 60 are no electric wires leading from the current-sourc to; thein'strument, thereby affording a universal-range 'of usefulness heretofore impossible. I

Having thus described my invention, what 65 Insuitable contact with the attaching means 7 is a current interrupter 16 which has a thumb piece 17, .preferablg f spring material T and isas-any '-=loc'ate as here 2, whereby itjwill be understood that the said thumb piece 17 of the current interrupter is suitably located for the supportof the instruments, the lamp thereof is brought into electric contact with the batthe lamp is light ed ow voltage and amperage, pro

rectly in contact with the delicate parts to ing hand of the operator and can be pressed into contact with the casing 2, which preferably of metal, as will be evident.

It will-be understood that the current interrupter 16 is movably mounted with respect to the attaching means in order thatit can be rotated and so be brought into contact with a lug 18 carried by the closure 6, in order that a permanent contact may be effected, if desired, without pressing in the 1 thumb piece.

As previously stated, the handle is adapted for use with any suitable instrument, and in the drawings I have shown four of such instruments, as examples, each ofthese instruments being provided with a suitable derstood that the handle is universal in its lamp 19 and a suitable socket 20 for connection with the attachingmeans carried by the handle, by which means it will be unadaptability, and by the connection with any ters Patent, is I 'A device of the character stated, comprising the combination of 'a handle adapted to I claim as new and desire to secure by Letcontain a source of electrical energy, a cap for said handle carrying an externallyprojecting threaded connection with open'end having a resiliently supported internal contacting member wlth a diagnostic instru-' ment adapted to form threaded engagement v HENRY DE ZENG,

Witnesses: V

' I (3. 1).. MOVAY, N. Bnssnvenn.

current from the handle 

